For each question, write a Karma integration test to ensure that all the tasks can be passed.

[seanlip]

In order to make sure that at least the demo questions are playable end-to-end, as well as guard against possible errors on the part of the question author, it might be nice to write a Karma test (for each question) that mimics a complete answer/feedback flow, all the way to the completion of all the tasks in the question. This would ensure that each question is completable, and help guard against errors arising during content development.

It might also be helpful to have one e2e Protractor test that mimics an end-to-end playthrough of a single question and checks that the right things get displayed in the right places.

[seanlip]

Note: This might be as straightforward as specifying a "correct answer" in each question schema, which would pass all the tests.